Oral sleep apnea appliance



FIG. 1 is a perspective view of oral sleep apnea appliance showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a right view thereof; and,

FIG. 7 is a left view thereof.

The broken lines in the figures show portions of oral sleep apnea appliance that form no part of the claimed design. 

CLAIM The ornamental design of an oral sleep apnea appliance, as shown and described. 